Process for the preparation of 1-hydroxylated vitamin d...

Details Process for the preparation of 1-hydroxylated vitamin d... Process for the preparation of 1-hydroxylated vitamin d...

C - Chemistry, Metallurgy

07

F

260/628.4, 260/4

C07F 7/18 (2006.01) C07C 29/40 (2006.01) C07D 303/04 (2006.01) C07D 309/12 (2006.01) C07D 487/04 (2006.01) C07F 9/53 (2006.01) C07F 9/54 (2006.01) C07F 9/655 (2006.01)

Patent

CA 1221707

Abstract "Process for the preparation of 1-hydroxylated Vitamin D compounds" 1-unsubstituted 5,6-trans vitamin D compounds are 1.alpha.-hydroxylated by SeIV oxidation in the presence of selenous acid at a pH in the range 3-9. The oxidation is preferably effected using a 1-unsubstituted-3-trihydro- carbylsilyloxy-5,6-trans vitamin D compound in the presence of a co-oxidant.

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